Male wood mice have a surprising sexual adaptation

Male wood mice have remarkably cooperative sperm. By hooking together in trains of hundreds or thousands of cells, they are able to swim faster than single sperm.

4

Where do wood mice live?

The rodent’s alternative common name – long-tailed field mouse – betrays the fact that it is not restricted to woodland. It can also thrive on sand dunes, moorland and in gardens and houses.

5

Do wood mice hibernate?

Wood mice do not hibernate, although they can enter periods of torpor if conditions get really tough. Breeding may continue through the winter if food is plentiful, following a heavy acorn crop, for example.